Statewide Rankings

Statewide Data Info
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Illinois

Average Temperature Rankings, July 1999

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  • Record Coolest
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  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
July 1999
1-Month
78.6°F
(25.9°C)
75.6°F
(24.2°C)
3.0°F
(1.7°C)
118th Coolest
Coolest since:
2009, 2014
11th Warmest
Warmest since:
1936
Ties: 1931, 1954
Jun–Jul 1999
2-Month
75.4°F
(24.1°C)
73.5°F
(23.1°C)
1.9°F
(1.0°C)
104th Coolest
Coolest since:
1915
25th Warmest
Warmest since:
1934
Ties: 2020
May–Jul 1999
3-Month
71.6°F
(22.0°C)
69.7°F
(20.9°C)
1.9°F
(1.1°C)
109th Coolest
Coolest since:
1924
20th Warmest
Warmest since:
1934
Ties: 1896, 1941, 1986, 2011
Apr–Jul 1999
4-Month
67.3°F
(19.6°C)
65.1°F
(18.4°C)
2.2°F
(1.2°C)
116th Coolest
Coolest since:
1907
13th Warmest
Warmest since:
1934
Ties: 1964
Mar–Jul 1999
5-Month
61.5°F
(16.4°C)
60.1°F
(15.6°C)
1.4°F
(0.8°C)
103rd Coolest
Coolest since:
1960
26th Warmest
Warmest since:
2012
Ties: 1925, 1942, 1964
Feb–Jul 1999
6-Month
57.5°F
(14.2°C)
55.0°F
(12.8°C)
2.5°F
(1.4°C)
119th Coolest
Coolest since:
1947
10th Warmest
Warmest since:
2012
Ties: 1954, 2010
Jan–Jul 1999
7-Month
52.9°F
(11.6°C)
50.7°F
(10.4°C)
2.2°F
(1.2°C)
111th Coolest
Coolest since:
1912
18th Warmest
Warmest since:
2012
Ties: 1911, 1953, 1986
Dec 1998–Jul 1999
8-Month
50.6°F
(10.3°C)
48.0°F
(8.9°C)
2.6°F
(1.4°C)
118th Coolest
Coolest since:
1904
10th Warmest
Warmest since:
2012
Ties: 1934, 1954, 2006, 2020
Nov 1998–Jul 1999
9-Month
50.1°F
(10.1°C)
47.3°F
(8.5°C)
2.8°F
(1.6°C)
119th Coolest
Coolest since:
1904
9th Warmest
Warmest since:
2012
Oct 1998–Jul 1999
10-Month
50.7°F
(10.4°C)
48.0°F
(8.9°C)
2.7°F
(1.5°C)
121st Coolest
Coolest since:
1904
7th Warmest
Warmest since:
2012
Ties: 1991, 2000
Sep 1998–Jul 1999
11-Month
52.6°F
(11.4°C)
49.7°F
(9.8°C)
2.9°F
(1.6°C)
122nd Coolest
Coolest since:
1904
6th Warmest
Warmest since:
2012
Aug 1998–Jul 1999
12-Month
54.4°F
(12.4°C)
51.6°F
(10.9°C)
2.8°F
(1.5°C)
122nd Coolest
Coolest since:
1904
6th Warmest
Warmest since:
2012
Feb 1998–Jul 1999
18-Month
55.6°F
(13.1°C)
52.7°F
(11.5°C)
2.9°F
(1.6°C)
125th Coolest
Coolest since:
1918
3rd Warmest
Warmest to Date
2012
Aug 1997–Jul 1999
24-Month
54.0°F
(12.2°C)
51.7°F
(10.9°C)
2.3°F
(1.3°C)
124th Coolest
Coolest since:
1905
3rd Warmest
Warmest since:
2017
Ties: 1932, 2000, 2013, 2018
Aug 1996–Jul 1999
36-Month
52.8°F
(11.6°C)
51.6°F
(10.9°C)
1.2°F
(0.7°C)
106th Coolest
Coolest since:
1979
20th Warmest
Warmest since:
2018
Ties: 1954, 2004
Aug 1995–Jul 1999
48-Month
52.2°F
(11.2°C)
51.6°F
(10.9°C)
0.6°F
(0.3°C)
85th Coolest
Coolest since:
1905, 1980
40th Warmest
Warmest since:
2019
Ties: 1940, 1987, 2011
Aug 1994–Jul 1999
60-Month
52.3°F
(11.3°C)
51.6°F
(10.9°C)
0.7°F
(0.4°C)
89th Coolest
Coolest since:
1906
35th Warmest
Warmest since:
2020
Ties: 1932, 1941, 1943, 1958, 1987, 2011

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